Home / Hugging Face
Hugging Face public Gradio chat Spaces (anonymous API)
huggingface.co/docs/hub/spaces-zerogpuInference through public Gradio Spaces, anonymous callersinference/huggingface-gradio-chat-spacesJSONcomparereport an errorprovider JSON
- Free allowance
- ZeroGPU Spaces give an unauthenticated caller 2 minutes of GPU quota a day at low queue priority (5 minutes for a free account); a public Gradio chat Space publishes its API schema with no token
- Verdict
- caveatusable, with a named limit or an unprobed read path
- Cost
- free tier
- Identity
- anonymousno card, no phone
- Binding limit
- volume-quota2 minutes of ZeroGPU GPU quota per day for an unauthenticated caller, low queue priority; 5 minutes for a free account; the quota resets exactly 24 hours after the first GPU usage
- Evidence
- documented4 sources; a first-party page was read and the sentence quoted
- Freshness
- stale on 2026-11-29checked 2026-10-29 (live); stale on 2026-11-29
| Free tier | ZeroGPU Spaces give an unauthenticated caller 2 minutes of GPU quota a day at low queue priority (5 minutes for a free account); a public Gradio chat Space publishes its API schema with no token unit minutes; metered on wall-clock; each Space defines its own endpoint names, such as /generate on huggingface-projects/llama-2-13b-chat; there is no OpenAI-shaped route and no model id echo |
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| Price | none stated |
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| Limits | - volume-quota (binding) 2 minutes of ZeroGPU GPU quota per day for an unauthenticated caller, low queue priority; 5 minutes for a free account; the quota resets exactly 24 hours after the first GPU usage source
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| Binding | volume-quota the 2 minutes a day of GPU quota binds; a Space on CPU hardware has no such quota stated in the page read |
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| Identity | anonymous an unauthenticated caller is a documented quota tier (Unauthenticated, 2 minutes, Low queue priority); no token was needed to read /gradio_api/info |
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| Egress | not published |
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| Interface | rest |
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| Tooling | gradio_client or the Space's /gradio_api/call/<api_name> routes; the schema is at /gradio_api/info on current Gradio and /info on older ones |
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| Composes with | pairs with ad hoc scripts; the 2 minutes a day of ZeroGPU quota for an unauthenticated caller is the scarce link |
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| Reliability | a Space can be paused or in an error state, and an older Gradio Space serves its schema at /info rather than /gradio_api/info |
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| Evidence note | documented the quota is first-party; the schema was read by a keyless GET. No chat call was made because probe issues GET and HEAD only, so a completed answer is unverified |
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| Parsed numbers | |
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Evidence 4
Unknown values 3
$.egress.metered egress metering was not published$.per_object_cap.stated the field does not apply to this kind of offer$.retention.stated the field does not apply to this kind of offer